configure encoding (true/false) of uri parameters

Request Type: feature

How to reproduce: 

Component(s): ngResource

Impact: small

Complexity: small

This issue is related to: 

**Detailed Description:**

Disbale or Enable uri parts encoding.

Examples.
first scenario is the default one and behave like angularjs resource before pull request.

return $resource('/assets/empty:uriPart', {}, {
            post: {method: 'POST', encoding: true}
        });

second scenarion is the new supported one with this pull request and disable UriParts encondig.

return $resource('/assets/empty:uriPart', {}, {
            post: {method: 'POST', encoding: false}
        });

Found this old patch from me and want to share it with you.

**Other Comments:**